Apparatus for sealably encapsulating articles
First Claim
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1. Apparatus for sealably encapsulating an article comprising:
- a plastics heating and pressurizing device defining a chamber to contain plastics material and comprising means to heat the material into a molten flowable state and for forcing the molten material from an outlet of the chamber; and
a manually portable accumulator defining a reservoir with an inlet;
the heating and pressurizing device and the accumulator having releasable coupling means to assembly them together with the inlet to the reservoir aligned with the outlet from the chamber to interconnect the chamber and reservoir and allow for transfer of molten and flowable plastics material from the chamber to the reservoir;
and the accumulator also having means to retain the plastics material in a molten flowable condition when in the reservoir, and means for forcing the material from the reservoir to fill a mould cavity during a sealing operation, after the accumulator has been manually transferred from the heating and pressurizing device, said forcing means actuable to fill a cavity at a sufficiently fast rate to ensure that, during filling, blocking of the flow passages to the cavity with hardening material does not occur.
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Abstract
A method of sealably encapsulating an article by using, in combination, a plastics heating and pressurizing device and a manually portable accumulator. The device has a chamber to contain plastics material and heat it into a molten state. There is a releasable coupling means to assemble the device and container together to interconnect the chamber with a reservoir inside the accumulator for transfer of the molten plastic material into the reservoir. The accumulator has means for forcing the molten material from the reservoir into a mold cavity when the accumulator has been manually transferred from the device to a mold.
76 Citations
9 Claims
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1. Apparatus for sealably encapsulating an article comprising:
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a plastics heating and pressurizing device defining a chamber to contain plastics material and comprising means to heat the material into a molten flowable state and for forcing the molten material from an outlet of the chamber; and
a manually portable accumulator defining a reservoir with an inlet;the heating and pressurizing device and the accumulator having releasable coupling means to assembly them together with the inlet to the reservoir aligned with the outlet from the chamber to interconnect the chamber and reservoir and allow for transfer of molten and flowable plastics material from the chamber to the reservoir; and the accumulator also having means to retain the plastics material in a molten flowable condition when in the reservoir, and means for forcing the material from the reservoir to fill a mould cavity during a sealing operation, after the accumulator has been manually transferred from the heating and pressurizing device, said forcing means actuable to fill a cavity at a sufficiently fast rate to ensure that, during filling, blocking of the flow passages to the cavity with hardening material does not occur. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification