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Shrink package color film and production method thereof

A heat-shrinkable film and heat-shrinking technology, applied in the field of packaging, can solve the problems of low impact resistance and tear resistance, poor heat sealability, unevenness, etc., achieve high impact and tear resistance, and reduce production costs. , The effect of meeting the packaging requirements

Active Publication Date: 2013-08-28
无锡市方成彩印包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the limitations of raw materials and processing technology, the heat-shrinkable packaging color film commonly used in the prior art is usually thick and uneven in thickness, and has low impact resistance and tear resistance, low transparency, and poor heat-sealing performance. and other issues, it cannot meet the packaging requirements of high-quality products, and the production cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A heat-shrinkable packaging color film, including a color printing layer and a heat-shrinkable film layer, the heat-shrinkable film layer is composed of the following raw materials in the weight ratio: 35-45 parts of LDPE high-pressure polyethylene with a melt index of 0.2-0.5g / 10min 25-35 parts of MPE metallocene polyethylene with a melt index of 0.3g / 10min; 16-25 parts of HDPE low-pressure polyethylene with a melt index of 0.2g / 10min; LLDPE linear low-density polyethylene with a melt index of 1.7-2.3g / 10min 5-8 parts of polyethylene; 5-8 parts of HDPE low-pressure polyethylene with a melt index of 0.5g / 10min.

[0028] Specifically, the LDPE high-pressure polyethylene with a melt index of 0.2-0.5 g / 10min is Daqing Petrochemical 1810D, Lanzhou Petrochemical 1810D or Yangba Petrochemical 1810D. The LDPE high pressure polyethylene with a melt index of 0.2-0.5g / 10min is Daqing Petrochemical 1810D. The MPE metallocene polyethylene is ENABLE2703 of ExxonMobil. The HDPE low...

Embodiment 2

[0039] The difference between Embodiment 2 and Embodiment 1 is that in the step S2 of the production method of the heat-shrinkable packaging color film, the raw materials are put into a closed plastic refining machine, and the plastic is refined at a temperature of 200°C for 10 minutes to obtain a plastic melted heat.

Embodiment 3

[0041] The difference between the third embodiment and the first two embodiments is that in the step S2 of the production method of the heat-shrinkable packaging color film, the raw materials are put into a closed plastic refining machine, and the plastic is refined at a temperature of 130°C for 12 minutes. A plasticized hot material is obtained.

[0042] The heat-shrinkable packaging color film of the present invention has the following properties:

[0043] The aging resistance life is 10-12 months; the shrinkage rate is 15%~30% in the transverse direction and 65%~85% in the longitudinal direction; the tensile strength is ≥18MPa in the transverse direction and ≥30MPa in the longitudinal direction; the elongation at break is ≥400% in the transverse direction and ≥400 in the longitudinal direction %; breaking strength transverse ≥ 18MPa, longitudinal ≥ 25MPa.

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Abstract

The invention relates to a shrink package color film and a production method thereof. The shrink package color film comprises a color printing layer and a heat shrinkage film. For the heat shrinkage film, MPE metallocene polyethylene is employed and LDPE high pressure polyethylene, HDPE low pressure polyethylene and LLDPE linear low density polyethylene with different melt indexes are cooperatively used, so the shrink package color film provided by the invention has high resistance to impact and tear, high transparency and good heat sealability; thus, the shrink package color film is thinner and has more uniform thickness, packaging requirements of high-quality products are met, and production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of packaging, and in particular relates to a heat-shrinkable packaging color film and a production method thereof. Background technique [0002] As a common packaging material in daily life, heat-shrinkable packaging color film is widely used. Beverages, mineral water, tea, beer, milk, daily chemical products, detergents, oil products, food and other products need to be wrapped as long as they have a carrier. You can see the figure of heat shrinkable packaging color film. Because multiple individual carriers are shrunk by a layer of film to form a whole, it has good strength and toughness, unlike PVC film, which is easy to break and crack, and will not deform like cartons after being damp and bumped, so it is favored by more and more manufacturers. sought after. [0003] However, due to the limitations of raw materials and processing technology, the heat-shrinkable packaging color film commonly used in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/32B65D65/40C08L23/06C08L23/08B29C55/28B29C47/92B29C48/92
CPCB29C48/08
Inventor 方波
Owner 无锡市方成彩印包装有限公司
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