Browse Prior Art Database

Vacuum Forming Products Having Insert Pins

IP.com Disclosure Number: IPCOM000081269D
Original Publication Date: 1974-Apr-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Grossmith, EJ: AUTHOR

Abstract

This arrangement enables thermoforming a plastic product with precisely located inserts in one pass.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Vacuum Forming Products Having Insert Pins

This arrangement enables thermoforming a plastic product with precisely located inserts in one pass.

A mold 10 is shaped in conventional manner for vacuum forming a thermoplastic sheet 12 into a useful article. The mold is provided with bores 14 for holding metal pins 16 during the forming cycle. Other apertures suitable for other inserts are contemplated.

Each pin 16, or other insert, is fitted with a head 20, or similar cap, having a "keyway" 22. The keyway is critical only in that the arrangement must be capable of evacuation, so that the thermoplastic sheet 12 enters the keyway 22 sufficiently to bond the sheet 12 to the head 20. Compatible thermoset heads offer an advantage. The bores 14 and pins 16 are controlled only in that the pins are precisely held during forming, but readily leave the bores in the parting operation.

Reliability and time reduction afford significant cost savings.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]