Device for stretching web formed of thermoplastic synthetic resin

A synthetic resin, thermoplastic technology, applied in the field of sheet devices, can solve problems such as difficulty

Inactive Publication Date: 2009-07-22
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this device, since the side portion of the sheet is bent toward the end surface of the central plate, and the sheet is elongated at the end surface, it is difficult to elongate the portion near the center in the width direction of the sheet at the same elongation rate. part and near the edge
That is, it is difficult to stretch the sheet with the same elongation across the entire width

Method used

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  • Device for stretching web formed of thermoplastic synthetic resin
  • Device for stretching web formed of thermoplastic synthetic resin
  • Device for stretching web formed of thermoplastic synthetic resin

Examples

Experimental program
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Embodiment Construction

[0029] Hereinafter, the apparatus for stretching a sheet formed of thermoplastic synthetic resin according to the present invention will be specifically described with reference to the drawings.

[0030] figure 1 , 2 It is an overall perspective view and a partial perspective view of an apparatus 2 for stretching the fibrous sheet 1 shown by phantom lines. The device 2 has a horizontal base 3 and a pair of support bodies 4a, 4b standing vertically from the base 3, and a roller 6 and a plate assembly 7 are supported by the two support bodies 4a, 4b via a shaft 8. figure 2 A state in which one side 4 a of the support is detached from the base 3 is shown. The arrow M indicates the machine direction of the device 2, and the roller 6 and the plate assembly 7 are around the shaft 8 supported by the two supports 4a, 4b or together with the shaft 8 in the same direction as the machine direction M when the fiber sheet 1 is elongated. A rotating body rotating at a circumferential sp...

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PUM

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Abstract

The invention provides a device for stretching a web formed of thermoplastic synthetic resin ove r its entire width. The device (2) for stretching a web (1) formed of thermo plastic synthetic resin comprises a plurality of first stretching members (L) arranged in the peripheral direction on the peripheral surface of a drum (6) rotating in a machine direction (M). A rotation element (7) rotating in t he same direction of and in synchronization with the drum (6) is provided on the rotation shaft (8) of the drum (6). A plurality of second stretching me mbers (U) respectively corresponding to the first stretching members (L) are provided on the rotation element (7). Portions, facing in the radial direct ion of the drum (6), of respectively corresponding first stretching member (L) and second stretching member (U) are formed by protrusions (31, 41) and r ecesses (32, 42) extending in parallel to the shaft (8) and alternately arra nged in the peripheral direction of the drum (6) to form a complementary sha pe meshing detachably in the radial direction of the drum (6). At least one of the first stretching member (L) and the second stretching member (U) is f ormed to be movable in the radial direction of the drum (6).

Description

technical field [0001] The present invention relates to an apparatus suitable for stretching a sheet such as a fiber aggregate made of a thermoplastic synthetic resin, a film made of a thermoplastic synthetic resin, or the like. Background technique [0002] Conventionally, a method and an apparatus for running a fiber or film sheet made of thermoplastic synthetic resin in the machine direction and extending the sheet in the machine direction during the running are well known. [0003] For example, Japanese Patent Publication No. 60-26859 (Patent Document 1) discloses an apparatus for stretching a continuous body of a nonwoven fabric that is a sheet made of thermoplastic synthetic resin. The apparatus uses a first pair of intermeshing rolls having grooves parallel to the axis of the rolls and a second pair of intermeshing rolls having grooves perpendicular to the axis to elongate the nonwoven in the machine direction and in a direction crossing that direction. The section o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06C15/04D04H1/70
CPCD04H1/74D06C3/00B29C55/08B29C55/18B29C55/02D06C3/06D06C15/04
Inventor 赤木健一松本美彦
Owner UNI CHARM CORP
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