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CPP protective film with good flatness

A flatness and protective film technology, applied to film/sheet adhesives, flexible coverings, packaging, etc., can solve the problems of printing and dyeing information carriers, affecting the distribution of adhesives, and affecting viewing, etc. Achieve the effect of not easy to wrinkle, ensure smoothness and increase toughness

Pending Publication Date: 2019-11-15
ANHUI SONGTAI PACKAGING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Cpp protective film can be used in food packaging, candy packaging, pharmaceutical packaging, document and photo album films, and adhesive tapes, etc., but the cpp protective film may wrinkle under external force, resulting in low flatness, while food packaging When the flatness becomes low, it will make it difficult to print and dye the information carrier on the surface. If the packaging of documents or photo albums is wrinkled, it will affect the viewing. If the adhesive tape is wrinkled, it will seriously affect the adhesion. distribution of agent

Method used

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  • CPP protective film with good flatness
  • CPP protective film with good flatness
  • CPP protective film with good flatness

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Embodiment 1

[0023] see figure 1 with Figure 4 , the present invention provides the following technical solutions: a CPP protective film with good flatness, comprising a first protective layer 1, a first adaptation layer 2, a support layer 3, a second adaptation layer 4 and a second protection layer 5, the support layer 3 The first adaptive layer 2 and the second adaptive layer 4 are respectively connected on both sides of the first adaptive layer 2, the other side of the first adaptive layer 2 is connected with the first protective layer 1, and the other side of the second adaptive layer 4 is bonded with the second protective layer. Layer 5, the supporting layer 3 includes several elastic supporting bars 301, and the cross section of the supporting bars 301 is prismatic.

[0024] Specifically, the support layer 3 is made of ethylene-propylene copolymer, and elastic particles 201 are arranged inside the first adaptation layer 2 and the second adaptation layer 4, and the diameter of the e...

Embodiment 2

[0027] see figure 1 , 2 with Figure 4 , the present invention provides the following technical solutions: a CPP protective film with good flatness, comprising a first protective layer 1, a first adaptation layer 2, a support layer 3, a second adaptation layer 4 and a second protection layer 5, the support layer 3 The first adaptive layer 2 and the second adaptive layer 4 are respectively connected on both sides of the first adaptive layer 2, the other side of the first adaptive layer 2 is connected with the first protective layer 1, and the other side of the second adaptive layer 4 is bonded with the second protective layer. The layer 5, the supporting layer 3 includes several elastic supporting bars 301, and the cross section of the supporting bars 301 is spindle-shaped.

[0028] Specifically, the support layer 3 is made of ethylene-propylene copolymer, and elastic particles 201 are arranged inside the first adaptation layer 2 and the second adaptation layer 4, and the dia...

Embodiment 3

[0032] see figure 1 , 3 with Figure 4 , the present invention provides the following technical solutions: a CPP protective film with good flatness, comprising a first protective layer 1, a first adaptation layer 2, a support layer 3, a second adaptation layer 4 and a second protection layer 5, the support layer 3 The first adaptive layer 2 and the second adaptive layer 4 are respectively connected on both sides of the first adaptive layer 2, the other side of the first adaptive layer 2 is connected with the first protective layer 1, and the other side of the second adaptive layer 4 is bonded with the second protective layer. Layer 5, the support layer 3 includes several elastic support bars 301, the cross section of the support bars 301 is spindle-shaped or prismatic.

[0033] Specifically, the support layer 3 is made of ethylene-propylene copolymer, and elastic particles 201 are arranged inside the first adaptation layer 2 and the second adaptation layer 4, and the diamete...

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Abstract

The invention belongs to the technical field of protective films, and particularly relates to a cast polypropylene (CPP) protective film with good flatness. The CPP protective film comprises a first protective layer, a first adaptive layer, a supporting layer, a second adaptive layer and a second protective layer; and two sides of the supporting layer are respectively connected with the first adaptive layer and the second adaptive layer, the other side of the first adaptive layer is connected with the first protective layer, and the other side of the second adaptive layer is connected with thesecond protective layer. The supporting layer is arranged in the CPP protective film provided by the invention, the supporting layer is composed of a plurality of elastic supporting strips, so that the toughness of the protective film can be increased, and the whole film does not easily have wrinkles; distribution of the supporting strips can be changed according to different produced products, so that the protective film has reliable toughness in a certain direction, and does not easily have wrinkles; and the adaptive layers which cooperate with the supporting layer are arranged on two sidesof the supporting layer, so that flatness of the exterior of the CPP protective film can be ensured.

Description

technical field [0001] The invention belongs to the technical field of protective films, and in particular relates to a CPP protective film with good flatness. Background technique [0002] CPP film is cast polypropylene film, also known as unstretched polypropylene film, which can be divided into general CPP (General CPP, GCPP for short) film, metalized CPP (Metalize CPP, MCPP for short) film and Retort CPP (Retort CPP, referred to as RCPP) film, etc. CPP is a polypropylene (PP) film produced by a casting extrusion process in the plastics industry. This type of film is different from BOPP (bidirectional polypropylene) film and is a non-oriented film. . Strictly speaking, CPP films only have a certain orientation in the machine direction (MD) direction, mainly due to the nature of the process. Excellent clarity and finish is formed on the film by rapid cooling on chilled rolls. [0003] Cpp protective film can be used in food packaging, candy packaging, pharmaceutical pac...

Claims

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Application Information

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IPC IPC(8): B32B3/08B32B27/32B32B27/06C09J7/29B65D65/40B32B33/00
CPCB32B3/08B32B27/06B32B27/32B32B33/00B32B2307/212B65D65/40C09J7/29
Inventor 焦国平
Owner ANHUI SONGTAI PACKAGING MATERIALS
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