Hot air punching film and forming method thereof

A perforated film and hot air technology, applied in dressings, viscous dressings, etc., can solve the problems of destroying the flexibility of plastic films, affecting the safety of plastic films, and affecting the healing of wound surfaces, so as to achieve safety assurance, solve anxiety phenomena, and ensure The effect of flexibility

Inactive Publication Date: 2014-07-16
黄利光
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Its disadvantages: First, whether it is natural gas (mainly composed of CH 4 ), pipeline gas (the main component is H 2 、CH 4 , CO), or liquefied petroleum gas (the main component is C 3 h 8 、C 4 h 10 、C 3 h 6 、C 4 h 8 ) is a slightly toxic substance. When its combustion flame heats PET, PP, PE, and nylon plastic films, the flame melts the PET, PP, PE, and nylon plastic films at the moment. The edge of the hole directly destroys the flexibility of the plastic film, which will cause friction to the skin, especially the wound surface, which will make the skin feel uncomfortable and affect the healing of the wound surface; the second is to use flame melting holes, and the harmful gas produced when the combustible gas burns directly Pollution to the surface of the melted plastic film and the atmosphere, affecting the safety of plastic film use

Method used

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  • Hot air punching film and forming method thereof
  • Hot air punching film and forming method thereof
  • Hot air punching film and forming method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Embodiment 1: with reference to attached Figure 1-3 . A hot air perforated film, the plastic film 1 has a plurality of through holes, and the edges of the plurality of through holes 2 on the plastic film 1 surface are convex edges 3 that are naturally shrunk by hot air. There is no flame trace on the 3 sides of the hot air shrinkage flange, and the through-hole hole is a round hole or a rectangular hole or a triangular hole or a polygonal hole, and the edge of the hole is the hot air natural shrinkage flange 3, that is, the shape of the hot air natural shrinkage flange 3 Curved edges for natural shrinkage.

Embodiment 2

[0016] Embodiment 2: with reference to attached Figure 4-7 . On the basis of embodiment 1, a kind of forming method of hot-air perforated film, when plastic film 1 passes through perforated hole forming mold roll 9, plastic film 1 face is attached to the roll surface of perforated hole forming mold roll 9 in rotation, At this time, the strip-shaped high-temperature blade airflow at the upper end of the perforating hole forming die roller 9 roller faces acts on the plastic film 1 face, and the plastic film covered on the perforating hole forming die roller 9 roller faces is gas-melted and punched Holes with the same shape as the grooves on the roll surface of the hole forming die. The temperature of the strip-shaped high-temperature blade airflow is not higher than the melting point of the plastic film, so that holes can be punched by means of the pressurized airflow to form a flexible and smooth arc-shaped edge, and the scorching of the pore edge of the plastic film can be a...

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Abstract

The invention relates to a hot air punching film and a forming method thereof, wherein high-temperature hot air is combined with a punching hole forming die roller to forcedly form a hot air punching film with naturally shrinkable convex edge on a polymer plastic film surface. The plastic film surface is provided with a plurality of through holes, and the edges of the through holes in the plastic film surface are naturally shrinkable convex edges. The hot air punching film has the advantages that: firstly, the hot air punching film formed by high-temperature air flow radically solves the problems that the edge of a hole punched by flames is burned, the flexibility of the plastic film is damaged by the burned hole edge, and secondary injury to skin, particularly to skin wound is caused, thereby ensuring the flexibility of the punched hole edge; secondly, due to adoption of the hot air punching, pollution of harmful gases to the punched plastic film surface and to atmosphere environment is completely avoided, so that the safety of the punched plastic film is guaranteed fundamentally; and thirdly, the hot air punching is adopted to ensure the flexibility and the smoothness of the plastic convex edge.

Description

technical field [0001] The invention relates to a hot-air perforated film with natural shrinkage convex edges formed on the surface of a polymer plastic film by combining high-temperature hot air with a perforated hole forming mold roll and a forming method, belonging to the field of perforated film manufacturing. Background technique [0002] CN10131581B, title "Aperture mask for flame perforation", the present invention provides a method of manufacturing such an aperture mask, comprising the following steps: providing a support surface, wherein the support surface includes a plurality of lowered parts; providing a flame injector, wherein the flame burner supports a flame, and wherein the flame includes a flame tongue opposite the flame burner; at least a portion of an elongated flexible plastic film web is brought into abutment contact with the support surface; The flame of the burner heats the plastic film to create pores in the area of ​​the plastic film covering the plu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/20B29C35/12A61F13/02
Inventor 黄利光
Owner 黄利光
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