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Blow Molding Categories
Blow is divided into injection blow molding, extrusion blow molding and stretch blow molding, injection blow molding is injection molding the first plastic bottomed parison, then moved into a blow molding parison blow forming. Extrusion blow molding process, tube extruded directly from the extruder, and hanging in separate pre-installed in a cavity just below the nose; and when the sagging reaches a predetermined length of the parison mold immediately, and by die cut tube incision; from orifice mold parting surface pass into the air, the parison against the mold wall and blow molding; packing, to be products in the cavity cooling and molding mold removal products.
For blow molding hollow thermoplastic varieties of many, the most commonly used material is polyethylene, polypropylene, polyvinyl chloride and thermoplastic polyester, etc., used to shape a variety of liquid containers, such as all kinds of bottles, barrels, cans Wait. Distinguish extrusion blow molding and injection blow molding (including injection stretch blow molding) method is to observe the bottom of the article, at the bottom there is a kind of navel injection point is the injection blow molding or injection stretch blow products, at the bottom there is a parting line is crowded a blow molding products.
Wrapping film and shrink wrap 2. 1. Stretch shrink film
Composite packaging film advantages:
1. good overall performance, with all the indifferent performance constitutes the composite film and has some special properties. 2. decorating effective and reliable health, decorating can be a pattern printed on the intermediate layer, the printing ink will not be contaminated packaging, but also to protect the decoration pattern is not worn during transport and use. 3. The strength of the composite film were higher than the base film with the strength, so the mechanical adaptable.

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How the nose plates and screens built, its role is to filter the melt and increase the flow resistance, in order to filter out impurities and improve mechanical mastication effect.
Plates, profiles and pipes. 7, compound filter
In the manufacture of thin-walled rubber products, products in order to prevent the occurrence of leaks, leaking, plastic material can contain impurities, usually before adding the vulcanizing agent of rubber extruder filter, which is placed one or more layers of the filters in the nose to filter out impurities in plastics material.
8, tire treads and tubes manufacturing
Tread extrusion points overall and stratified extrusion. Available whole extrusion an extruder to a glue material through a flat die extrusion; also There are two compounds (crown materials and sidewall material) two extruders co-extrusion, in a co-extrusion machine combining into a whole within the first tread. Stratified by extruding the two extruders are two kinds of material extruded rubber tread and sidewall, and then in the heat conveyor belt fit, and by the more active roll disc as a whole. Extrusion and tube extrusion tube similar rear tire tube extruded, by cutting, molding and then fitting. 9, melt spinning
Some viscosity of the resin during melt spinning, molten material commonly used extruder. Good melt material directly through the filter into the spinnerets, or spinning pump into a spinneret. Extrusion blow molding
Blow Molding (also known as blow molding) is closed by means of gas pressure in the mold melt blown parison method of forming a hollow article, is the third most common type of plastic processing methods, but also the rapid development a plastics molding method. Blow molding mold only female mold (die), compared with the injection molding, low equipment cost, strong adaptability, can be good formability (such as low stress), it can be formed with complex undulating curve (shape) of the article .

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Extrusion equipment
Extruder head and the body is, in addition to feeding, shaping, cooling, pulling, cutting and winding and other auxiliary equipment (see pictures). In the rubber vulcanization process further includes devices. In actual production, the main and auxiliary equipment is often connected to a unit to use. 1, the extruder
Divided by the number of single-screw extruder and a twin screw extruder (1) single screw extruder
Single-screw extruder is in the heating cylinder installed with a rotating screw, barrel external heating and cooling devices partition has one end with a radial feed port and the other end connected to the axial and head. It is a key component of the screw extruder. Single screw extruder main technical parameters Screw diameter, aspect ratio (the ratio of length to diameter of the screw), the screw speed range, the drive motor power, cylinder power and heating machine production capacity. Extruder screw diameter determines the allowed maximum production capacity and product cross-section machine. Different materials require different screw geometries and aspect ratio. Modern plastic extrusion machines widely used combination screw, distributive mixing type screw, and the screw or pin plus barrier so as to improve plastics, improve productivity and product quality. (2) twin-screw extruder
Twin-screw extruder has two screws rotating in ∞-shaped heating barrel. Can be divided into the screw-type engagement and non-engagement; and a combination of non-modular; co-rotating and counter-rotating. In the same direction intermeshing and counter-engagement type used more. The former is for plastic blends, filled and reinforced, the production batch; the latter used in the manufacture of hard PVC products. 2, the nose and die
Extruder manipulation of the extrudate to form a predetermined cross-sectional shape of the die member, said transition portion between the barrel and the die, said nose, and if the die head as a whole, generally referred to as the nose, It may also be referred to as a die.

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Anti-fogging agent
Anti-fogging agent, also known as anti-fog drops or drops. PVC agricultural film can be prevented to reduce the occurrence of water droplets in the transparent material. Mainly surfactants, esters such as xylitol, sorbitol monopalmitate, or lauric acid monoglycerides hard resin and the like. Plastic packaging materials, plastic packaging material permeability properties
Factors affecting the barrier properties of plastic packaging materials, molecular polarity 1. 2. 3. molecular crystalline molecular hydrophilic molecular orientation 4. 5. Ambient temperature
Improve the barrier properties of plastic packaging materials composite modification method
2. Add the modified additives
3. Surface Coating Modification
(1) vacuum aluminum
(2) vacuum plating oxide (3) coated with amorphous carbon (4) 4. The coated barrier resin modified chemical treatment
Health plastic packet transfer material hygienic hygiene 2. 1. plasticizer stabilizer
3. The health of colorants and inks hygiene 4. Other plastic additives other properties
1. Plastic transparency printability 2. 3. 4. antistatic heat sealability
Flexible packaging and plastic molding
Category 1. singlemode plastic flexible packaging materials 2. Composite material is extruded
In the processing of plastic packaging products, usually the first solid plastic resin into a melt by a suitable method, then it will melt molding such a certain way, to the required manufacturing plastic packaging products. This process can be accomplished in many devices, one of which is an extrusion process, the extrusion process is mainly used to produce films, sheets, and extrusion blow molding bottles and plastic packaging products, equipment used is a plastic extruder.

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Polyethylene pre toughness, dielectric properties and excellent resistance to chemical corrosion, molding process is good, but poor rigidity, less smoke when burning, low-pressure polyethylene temperature up to 100 ℃.
As a white waxy translucent polyethylene material, soft and tough, is lighter than water, non-toxic, it has excellent dielectric properties. Flammable and away from the fire continues to burn. Polyethylene low permeability, organic vapor transmission rate is larger. The transparency of the polyethylene increases with the degree of crystallinity decreased in a certain degree of crystallinity, transparency and increase with increasing molecular weight. High density polyethylene melting point in the range of 132-135 ℃, low density polyethylene low melting point (112 ℃) and wide range.
At room temperature, not soluble in any known solvent, a small amount of more than 70 ℃ dissolved in toluene, amyl acetate, trichlorethylene and other solvents.

Polyethylene has excellent chemical stability, resistance to room temperature, hydrochloric acid, hydrofluoric acid, phosphoric acid, formic acid, amines, sodium hydroxide, potassium hydroxide and other chemicals, sulfuric acid and nitric acid has a strong role in the destruction of polyethylene . Polyethylene easy photo-oxidation, thermal oxidation, ozone decomposition, prone to degradation under the action of ultraviolet light, carbon black polyethylene has excellent light shielding effect. That can occur after radiation crosslinking, chain scission, form an unsaturated group and so reflect. Polyethylene Classification and Application.

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Classification of polymer materials
1. 2. The thermoplastic polymer material thermosetting polymer materials
Plastic packaging materials commonly used resin and additives
It refers to the plastic polymer material composition and various additives, and malleable material quality, which is composed of two kinds of resin additives and chemical composition of the main component.
Common resin
Polyethylene
PE (polyethylene, referred to as PE) is a thermoplastic resin polymerized ethylene obtained. In the industry, but also copolymers of ethylene with minor amounts of α- olefins. Polyethylene odorless, non-toxic, feel like wax, has excellent low temperature properties (lowest temperature up to -70 ~ -100 ℃), good chemical stability, resistance to most acid-base erosion (intolerance with oxidation properties acid), at room temperature, not soluble in common solvents, water absorption, excellent electrical insulation properties.
Polyethylene odorless, non-toxic, feel like wax, has excellent low temperature properties (lowest temperature up to -70 ~ -100 ℃), good chemical stability, resistance to most acid-base erosion (intolerance with oxidation properties acid), at room temperature, not soluble in common solvents, water absorption, but because of its linear molecules slowly dissolve in some organic solvents, and does not swell, excellent electrical insulation properties; but polyethylene for environmental stress (chemical and mechanical effect) is very sensitive, and poor heat aging.
Polyethylene nature because of different varieties, depending on the molecular structure and density.

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Including packing tape, tear tape, adhesive tape and ropes. Plastic packing tape is made of polypropylene, high density polyethylene or polyvinyl chloride do with the embryo, oriented by uniaxial stretching, embossing from 13 ~ 16mm wide-band, single tensile strength 1300N more than metal or paper packaging strapping convenient and strong.

Structure and properties of the polymer chain basics of polymer materials

Polymer is a long chain molecules made up of atoms covalently bonded phase, it is not necessarily stretched straight, but have a variety of different shapes.

1. Composition and morphology of the polymer chain

According to the geometry of the polymer chain can be divided into linear and integrated two structures. 2. The forces between the polymer (1) bond strength

(2) secondary valence forces

Room (3) intermolecular forces on polymer properties

① less polar hydrocarbons, small intermolecular force and have good flexibility.

② If there are no major side groups in the molecular chain, relatively free movement, showing good flexibility. ③ with polar groups are large intermolecular force, if there are a large side groups, affecting the movement of the chain, and therefore has a certain hardness and strength.

④ If the polar group with a strong intermolecular force larger (such as hydrogen group), together with the molecular structure more structured,

It makes such a polymer having a high strength and other mechanical properties. .

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Many plastic packaging material has good transparency, made the packaging container can clearly see the contents, play a good show, promotional effect. 5. good health
Pure polymer resin almost no toxicity and can be safely used in food packaging. 6. good processability and decorative
Plastic packaging products can use extrusion, injection, plastic molding and other methods, it can easily be infected with a beautiful color or printed decor pattern. Plastics are used in the packaging
1. Film
It comprises a single layer films, laminated films and sheets, made of materials such as flexible packaging, mainly used for packaging food, medicine and so on. 2. Container
(1) plastic bottles, barrels, cans and hose container (2) cups, boxes, plates, boxes and other containers
3. shockproof cushion packaging material
The main use of polystyrene foam, low-density polyethylene, polyvinyl chloride and polyurethane made.
4. The sealing material
Including sealants and cap liners, gaskets, etc., it is a class of adhesive and sealing paste or viscous liquid elastomer, polyurethane or ethylene - vinyl acetate resin as a main component used barrels, bottles, tank sealing material. 5. The strip of material.

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Plastics are referred to the plasticity of polymer materials, it synthetic rubber, synthetic polymer materials belong. Polymer materials mainly in plastics, rubber, fibers, adhesives, coatings, inks and other forms of use in the packaging industry, which is the most widely used plastic. Plastics can be prepared flexible, hollow containers (bottles, cans, buckets, etc.), turnover box, plastic container sheet, foam cushion packaging materials, bags, straps and the like.
Characteristics and plastic packaging products
1. Good light, mechanical properties
Light weight, high strength. Lightweight plastic, the density of plastic in general between 0.9 to 2.3 g / cm 3, only about 1/8 of steel to 1/4, 1/2 2. Suitable aluminum barrier and permeability
Choose a suitable plastic material can be made barrier suitable packaging, including a gas-barrier packaging, moisture-proof packaging, waterproof packaging, preserving flavor and packaging for packing easy because of oxygen, moisture and the role of oxidative deterioration, corruption moldy food and other packaging materials .
3. Good chemical stability
Plastic good resistance capability in general acid, alkali, salt and other media are resistant enough to be resistant to anti-water, oxygen, carbon dioxide and a variety of packaging materials (such as food acidic components, grease, etc.) and packaging from the external environment chemical corrosion medium, which is compared with the metal has a strong advantage. 4. excellent optical performance.

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3. long distance belt conveyor design
3.1 According to the design requirements for aggregate transport characteristics of the belt conveyor system design. Feed-line tape machine is insufficient, the wire can be simultaneously fed to the long distance belt conveyor. Then dried ▽ 308m concrete system B1-B6 tape machine gravel silo to store or through ▽ 360m concrete system A0-A4 to the tape machine gravel silo reserves, after entering the secondary screening aggregate adjustment hopper (once cooled feed warehouse), for the production of concrete mixing plant.
Way long distance running belt conveyor technology delivery system to flow in the central control room to achieve automatic operation by PLC and computer control system. The main control system with fault detection and protection functions, enabling unmanned operation machine side. To this end, long-distance belt conveyor system designed deviation, slipping, blocking, anti-tear and stop (rope) switch, in addition to water installations and other ancillary equipment. In the head with a blanking machine baffle to prevent material falling into the card or tape and tape drum damage. In the machine by the tail with two feed points, in front of the guide trough to enhance the guiding groove, behind the guide trough for the fixed guide trough, when the rear guide trough that is expected, the front guide trough rises. The tape is run by the friction between the tape drive roller and driven. Bypassing tape drive roller and a plurality of rollers to form a bend stepless endless belt, tape up and down respectively by the various branches of the upper and lower roller group supported by a tensioning device for tensioning the tape to the required transmission power roller from the drive means (motor and transmission CST controlled start means). Material through the guide trough constantly added to and subsequently operate together to complete the transportation task on tape.

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 Hydraulic and electrical control devices with the regulator, a good solution to the conveyor and the slow-start power balance this problem. Hydraulic speeder carrying capacity 40% larger than the YL-type coupling, starting acceleration in 0.1m / s2 ~ 0.3m / s2 within the range stepless, multiple hydraulic control devices can be used simultaneously to meet the needs of coal mine production .
2.3 PLC control system
Large angle belt conveyor formulated with advanced computerized programmable controller PC. Control and protection functions, has a slow start and multi-motor drive power balance automatic adjustment function, easy to expand, a simple circuit structure, easy maintenance, high reliability, and has the following features:
2.3.1 continuous detection of motor speed or line speed tape, each motor load starting sequence, respectively. Small impact on the grid;
2.3.2, with overspeed and slipping protection; use PC-speed counter module, the preset limits on speeding and skidding lower limit, when the count value of the high-speed counter exceeds or falls below the preset, PC internal relay, implement overspeed or skid protection. PC─.4, more optimized component parts
2.4.1, hydraulic speeder single power up to 650kw.
2.4.2, using planetary gear reducer, small size, large carrying capacity, high transmission efficiency, low noise.
2.4.3, modified to drive roller frame tripod shape, reducing the volume of the head frame;

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Scotch tape machine to introduce the latest foreign advanced technology, but also increased the highly sensitive automatic correction equipment and high-sensitivity infrared sensor, it is possible to produce a transparent tape tidy corner but does not produce waste. Scotch tape machine Advantage 5, can freely adjust the temperature
Scotch tape using the latest electronic temperature control, the temperature can be adjusted according to their own needs. Scotch tape machine advantage 6, can freely shift
Scotch tape machine using the latest CVT motor, can freely adjust the speed of their work at work.
These are the National League Zhengzhou Machinery Co., Ltd. related presentations on transparent tape production machine advantages, Zhengzhou Machinery Co., Ltd. League of Nations stated, transparent tape machine is a set of discharge, printing, coating, drying, hot air circulation, traction, cutting, winding and other technology as one of the tape production and processing equipment, which uses the first high technology, and modular design, simple operation, and maintenance more convenient.
Vacuum packaging machine heat tape and insulation cloth distinction heat tape and insulation cloth accessories with a vacuum packaging machine, but many customers would confuse the two parts. Below said about heat tape and insulation cloth tape main difference between the high temperature thermal insulation and play a role in the continuous roll vacuum packaging machine applications more, because continuous scroll large vacuum packaging machine work intensity, so the heating portion of the aluminum alloy block , it is necessary to put a layer of heat tape in the above plus the tropics, in order to achieve an insulating function. The insulating board vacuum packaging machine heat tape is not required.

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Due to very low release stripping force (automatic die-cutting, waste discharge, labeling) for the next board, steel, aluminum and other high-temperature applications identifiable tracking tag; and can be made into a variety of high temperature labels, operation is very convenient!
VI. Feeder tape high temperature
Feeder tape easy to use, easy to operate directly deconvolution for splice protection from high-temperature environment type silicon surface material.
Tape release paper feeder according to vehicle speed and sticky surface by different physical properties, divided into several categories.
ZH-PG290F type designed for high temperature, high-speed operation under conditions when used in film and other leather PU adhesive release paper using a junction, the color red;
ZH-PG290H type designed to be used at high temperatures using an adhesive release paper pick the bottom, the color is yellow. ZH-PG290R, PG365R / G type designed to be used at high temperatures and other mucosal anti-adhesive silicone release surface splicing, high temperature 200 degrees, the colors are green, red, yellow and so on.
Seven high-temperature glass cloth tape .BR18
With imports of high-density non-alkali glass fiber cloth as the substrate, single-sided pressure-sensitive rubber-coated high-temperature, high-precision coating reaches ± 2.5um, high tensile strength, shear resistance, and easy punching die-cutting process It has excellent heat resistance and insulation properties!
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Print
To be placed on the printed sheet supply roll on, start the machine. Driven by respective gear mechanism to rotate the printed version roller and gravure printing rollers stacked to achieve, and then by natural drying or heat drying, rolling take-up reel, complete printing function. Coating www.hnjt88.com
The substrate to be coated is placed on the unwinding roller, start the machine, driven by the corresponding drive gear mechanism.
Tape machine electricity, coal, gas three bake one, electronic temperature control, infinitely variable, automatic counting, automatic correction, gravure printing, advanced infrared heating, cooling and other high-tech re-pressed. Set of discharge, printing, coating, drying, hot air circulation, traction, slitting, rewinding and other production processes one machine. Tape machine technical parameters
Machine type: outer oven heating, strong arched shape, width of the substrate: Min600-Max.1600mm Coating width: 1450mm - 1650mm substrate diameter: 800mm maximum unloading coating composition: plastic water base length: 500-6000M. (with an outer diameter of 800mm prevail.)
Coating methods: wire rod glue glue Viscosity: 50-150cps mechanical speed:. 200 M / min.

Paper Sticky Tape

Gravure
2. Coating and drying
Coating is to create the most important step of sealing tape, pressure sensitive adhesive coated on BOPP film, and then the oven dried.
3. slitting and rewinding
The parent roll cut into the size of the user's needs, and then crimped. The process to keep points sharp knife, otherwise it will cause uneven edges of the tape, leading to likely be tearing the tape rolling.
seal tape
product manual
Structure
BOPP tape with polypropylene film as the substrate, coated with pressure sensitive adhesive baked into sticky tape.
Feature
High tensile strength, light weight, non-toxic, odorless, environmentally friendly, low-cost, has become the mainstream of packaging materials.
Use
Suitable for all kinds of sealing adhesive, particularly in the carton sealing glue, and can meet the automatic packaging machine sealing.
Colour
Transparent, beige, yellowish brown, earth brown, coffee, white, blue, red, black, green and so on, you can do all kinds of printing tape according to customer requirements.
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Adhesive surface must be dry, humid environment will affect the release of linear polyethylene colloid due to viscosity decrease. After bonding, but plastic, otherwise it will affect the bonding performance. Direction conductivity, that is, two colloidal "Z" direction, the best performance. Advantages: conductive double-sided adhesive tape roll materials, are free or die cut into different widths; has excellent anti-aging, UV resistance.

Cotton double-sided tape is a tissue paper substrate, pressure-sensitive adhesive coated on both sides, white silicone treated release paper, adhesive and durable.

Features: strong adhesion, double-sided adhesive, easy to tear, with a clean.

Applications: it can be used to fit the logo, photos, envelopes, hooks. Footwear and leather industries, embroidery.

Flexographic printing process, pasting tape application has been an issue of concern to everyone, Here we will introduce a version of the tape affixed to the selection and use issues.

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Transmission surface tooth surface clean and free of surface scratches. C. plate quality
· Plate size (standard); · the back plate smooth, flat;
· Whether inverted beveled edge of the plate, and if there are jagged burrs.
(2) Color halftone paste. General pasting plate is relatively simple, but for color halftone paste to
Careful operation.
① affect the accuracy of the registration site one by one check, it must maintain proper accuracy. ② strict checks and double-sided tape plate thickness and uniformity
The benefits of double-sided foam tape?
A: In life, when the hook hanging on the wall when not sticky, with the point of 3M double-sided adhesive foam and can firmly stick to the wall, the waterproof performance, good holding power.
Two: there is a strong initial tack, temperature resistance, and therefore the more holes in the foam can be bonded firmly, special double-sided adhesive foam for all types of double-sided adhesive foam stick together at the design, the length of time you want to use See products in what circumstances, without the harsh situation in general is about 5 years can be guaranteed.