— — Heat shrink film is used for the sale and transportation of various products, its main role is to stabilize, cover and protect the product. Shrink film must have high puncture resistance, good contractility and a certain shrinkage stress. In the process of shrinkage, the film must not produce holes. Since shrink films are often suitable for outdoor use, UV anti-UV agents need to be added. — —

Type of heat shrink film

PE shrink film

PE polyethylene, which is a transparent thermoplastic. PE commonly used there are three categories, namely: LDPE, HDPE, LLDPE three kinds of polyethylene monomer is the same, but, in the synthesis of these polyethylene, the process conditions used are not the same, therefore, to generate three different kinds of polyethylene varieties, the performance of three kinds of materials have great differences.

PE film is a good toughness of the material, not easy to use ordinary plastic shredder crushed. Because PE film is soft and tough, it is not easy to chop, not to mention the high temperature of the tool at high speed, LDPE will melt and adhere to the blade. PE granulation, can be directly into strips into the extruder feeding port, by the shear force of the screw to drag the PE film into the barrel heating melt extrusion granulation. PE recycled primary material, can still blow film, used for non-food and pharmaceutical packaging, but also widely used in Oxford leather and waterproof cloth production, promising.

Widely used in wine, cans, mineral water, all kinds of beverages, cloth and other products of the whole package, the product has good flexibility, anti-impact, tear resistance, not easy to damage, not afraid of moisture, shrinkage rate.

PE heat shrinkable film detailed parameters:

width: 0.2 m monolithic ~ 9 m horizontal tear strength: & ge; 40kn/m

cylinder film 0.4m~4.2m longitudinal :≥ 40 kn/m

thickness: 0.015 mm to 0.35 mm

the tensile strength, lateral: & ge; 17mpa longitudinal :≥ 17 mpa

shrinkage rate: 15% ~ 30% longitudinal 50% ~ 70%

elongation at break, & ge; 350%

shrinkage temperature: 120 ¡æ ~ 180 ¡æ

roll heart be: 76 mm

weight: 0.925 g/cm3

PVC shrink film

the composition of the PVC shrink film and to enhance its heat resistance, toughness, Ductility and so on. The top layer of this surface film is lacquer, the main component in the middle is polyvinyl chloride, and the bottom layer is backcoated adhesive. It is a much-loved, popular and widely used synthetic material in the world today. Among the materials that can produce 3D surface film, PVC is the most suitable material.

Due to the unique properties of PVC (rain proof, fire resistance, antistatic, easy molding) and PVC low input high yield characteristics, is widely used in building materials industry and packaging industry, therefore, PVC film has high transparency, good gloss, high shrinkage characteristics.

POF is a multi-layer co-extruded environmental protection polyolefin heat shrink packaging material. The film adopts double bubble processing technology, LLDPE as the middle material, ternary copolypropylene as the inner and outer layer material, by three layers of co-extrusion composite production. POF has high transparency, high shrinkage, good heat sealing performance and other significant characteristics, it also has the advantages and advantages of PP film and PE film, so its product performance is far more than the simple PP film and PE film, is currently widely used in the international market, and through the European and American market recognized environmentally friendly heat shrinkable film packaging materials.

POF packaging film main characteristics are:

1, high shrinkage rate;

2, gloss, high transparency, good product decoration performance;

3, good flexibility, low temperature non-embrittlement, not easy to aging;

4, low product density, can effectively reduce packaging costs;

5, outstanding heat sealing performance, high sealing strength;

6, tear resistance, good puncture resistance;

7, wide range of use, can be used in semi-automatic, automatic high-speed packaging equipment and manual packaging;

8, the product in line with FDA and USDA standards, non-toxic, environmental protection, can be used for food and drugs and other products packaging production.

can provide thickness: 10μ , 12μ , 15μ , 19μ , 25μ , 30μ , 38μ

polyolefin heat shrink film product performance

OPS shrink film

OPS(heat shrink film) is a new type of packaging material that meets the requirements of environmental protection, OPS heat shrink film has high strength, large rigidity, stable shape, And has a good gloss and transparency. Easy processing, easy coloring, good printing performance, high printing resolution, for the continuous pursuit of fine printing of trademarks, is a material progress. Due to the high shrinkage and strength of the OPS film, it can closely fit with a variety of different shapes of containers, so it can not only print beautiful patterns, but also meet the use of a variety of different shapes of novel packaging containers, this non-toxic and tasteless, grease resistant, in line with food hygiene standards of the film can allow designers to use eye-catching colors to achieve 360° Label design, give full play to creativity and imagination, so that drinks and other goods in the use of the label pattern is more vivid, highlighting the image on the shelf, producing an unexpected container effect.

OPS is a new body printing grade packaging material in line with international environmental protection requirements.

1)OPS can reach a horizontal shrinkage rate of about 74%, and it is not easy to wrinkle during the contraction process. In the non-high temperature environment can complete the contraction, so that the heat shrink label can fit the body packaging outside the container. After the transverse contraction of the label is completed, the vertical direction will hardly shorten the height of the label due to the longitudinal contraction.

2) Almost no crystal point occurs in OPS. Because OPS resin is different from PVC resin in the raw material refining process, it can greatly reduce the existence of crystal points and foreign bodies.

3) Light weight of OPS. The proportion of OPS is only 1.05, for the same thickness of the same area of OPS, PVC, PET three materials, OPS can reduce the weight of 25%.

4) The tear line made after the contraction of the OPS label is very symmetrical and easy to tear without destroying the overall effect of the label.

Thermal shrink film in accordance with international standards carefully made small thermal shrink packaging equipment, with simple operation, wide range of application, good sealing, high transparency, low cost, high grade characteristics, suitable for small and medium-sized batch product packaging. The hot shrink film machine is used online with the set of label machine to form the set of label shrink machine line, which is widely used in medicine, food, beverage, cultural supplies, ceramics, daily chemical, auto parts, knitwear, electronic audio and video and other products. It is the set of label shrink machine of the packaging line.

PET shrink film is a new type of heat shrink packaging material. Because it is easy to recycle, non-toxic, tasteless, good mechanical properties, especially in line with the characteristics of environmental protection, polyester (PET) in developed countries has become an ideal alternative to replace polyvinyl chloride (PVC) heat shrink film.

However, ordinary polyester is a crystalline polymer, and ordinary PET film can only get a thermal shrinkage rate below 30% after special process treatment. In order to obtain a higher thermal shrinkage of the polyester film, it must also be modified. That is to say, in order to prepare polyester film with high thermal shrinkage, common polyester, namely polyethylene terephthalate, needs to be copolymerized. The highest thermal shrinkage rate of PET film after copolymerization modification can be as high as more than 70%.

The characteristics of heat shrinkable polyester film: it is stable at room temperature, when heating (glass transition temperature above) shrinkage, and is in one direction more than 70% of the thermal shrinkage.

The advantages of heat shrinkable polyester film packaging are :

¢Ù body transparent, reflecting the image of the product.

¢Ú Tight packaging, good dispersion.

¢Û waterproof, moisture-proof, mildew proof. ¢Ü no resilience, there is a certain anti-counterfeiting function.

Heat shrinkable polyester film is often used in convenient food and beverage markets, electronic appliances, metal products, especially shrink labels is its most important application field. Because with the rapid development of PET beverage bottles, such as cola, Sprite, all kinds of juice and other beverage bottles need PET shrinkable film with it to do heat seal labels, they belong to polyester, is environmentally friendly materials, easy to recycle and reuse.

In addition to being used as a shrink label, the thermal shrinkable polyester film has also begun to be used on the outer packaging of daily commodities. Because it can protect the packaging items to avoid impact, rain, moisture, rust, and can make the product to print exquisite packaging to win users, at the same time it can well show the good image of the manufacturer. More and more packaging manufacturers use printing shrink film to replace the traditional transparent film. Because the printing shrink film can improve the appearance of the product grade, is conducive to the advertising of the product, can make the trademark brand in the minds of consumers have a deep impression.

PET heat shrink film General properties :

unit: This is one of the biggest characteristics of shrink-film packaging. With the film's strong winding force and retraction, the product is compact and fixed bundled into a unit, so that scattered small pieces become a whole, even in an unfavorable environment, the product does not have any loose and separated, and there is no sharp edge and viscosity, so as to avoid damage.

Primary protection: Primary protection provides the surface protection of the product, forming a very light and protective appearance around the product, so as to achieve the purpose of dust, oil, moisture, waterproof and anti-theft. It is particularly important to wrap film packaging so that the packaging items uniform force, to avoid uneven force caused damage to the items, which is the traditional packaging (bundling, packaging, tape and other packaging) can not do.

compression firmness: With the winding film stretching after the retraction force will wrap the product packaging, forming a compact, space-free unit as a whole, so that the product pallets are tightly wrapped together, can effectively prevent the mutual dislocation and movement of products during transportation, while adjustable tensile force can make hard products close, soft products tight, Especially in the tobacco industry and the textile industry has a unique packaging effect.

Cost saving : The use of wrap film for product packaging can effectively reduce the cost of use, the use of wrap film is only about 15% of the original box packaging, about 35% of the heat shrink film, about 50% of the carton packaging. At the same time, it can reduce the labor intensity of workers, improve the packaging efficiency and packaging grade.

The characteristics of the shrink machine