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Spout forming strip remnant

a technology of forming strips and remnants, applied in the field of forming packets, can solve the problems of uneconomical discarding, unwieldy dispensing tubes or cartridges, high undesirable effects, etc., and achieve the effect of efficient and economical form and filling of the invention viscous material

Inactive Publication Date: 2017-04-27
MOMENTIVE PERFORMANCE MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention offers a new way to solve issues with viscous material dispensing packets by providing a packet, method, and kit. This also includes a way to efficiently and economically form and fill the packets. The technical effects involve reducing waste, cost, and difficulty of using viscous material dispensing packets.

Problems solved by technology

Typically, the dispensing tube or cartridge is unwieldy and difficult to use on small jobs.
Discarding is uneconomical and may be highly undesirable for environmental reasons.
At present, there is no known recycling available for the wide variety of sealant compositions available on the market.
In these cases, unless the container is correctly reclosed, residual material will be lost.
But these caps are fragile pieces that are easily split or otherwise damaged from over-tightening.
Or, the snap-fit bead and groove may not provide an enduring reclose fit until the time when the tube is next required for a caulk job.
But, these solutions do not avoid content hardening for more than a short period of time.
But, oftentimes these mechanisms do not work because the packets rupture or the packets contain enough air to dry the tube contents.
Additionally, a foil or wrap can not be closely and tightly fitted around the tube and nozzle without air gap.

Method used

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  • Spout forming strip remnant
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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0056]This EXAMPLE describes a series of iterative evaluations of packet samples to determine a best more rigid material.

[0057]First, a range of materials including a paperboard, plastic sheet and corrugated fiberboard were evaluated for output performance. Sample paperboard thickness was varied from approximately 0.010″ to 0.100″; a high density polyethylene sheet (HDPE) was varied in thickness from approximately 0.005″ to 0.100″; and a corrugated fiberboard corrugation was varied from B flute to N flute.

[0058]User ratings determined that a paperboard with a thickness less than approximately 0.080″ did not have sufficient stiffness for acceptable dispensing and “ease of use.” A thicker paperboard gave improved performance results but was rated unacceptable because of bulky feel. Thinner HDPE samples below 0.040″ in thickness, were rated unacceptable because of insufficient stiffness. Thicker HDPE samples showed improved performance but increased cost.

[0059]Performance for corrugate...

example 2

[0060]Another series of tests was conducted to determine a best performing packet in terms of sealant bead shape. A standard bead was defined as a deposit of sealant with a circular cross section.

[0061]First tested packets had only a top film pouch and thicker bottom material sidewall. The thicker material sidewall was folded to form a nozzle. However, the nozzles formed from the folded sidewall were flexible and formed a non-uniform bead. A bead cross section would initiate in a shape of a thin horizontal diamond. Then later in the dispensing, the bead cross section would be formed in the unacceptable shape of a thin vertical diamond. Furthermore, the top film tended to form sharper folds and creases at the nozzle, making the cross section less uniform.

[0062]In the tests of this EXAMPLE, a semi-rigid material was added to one sidewall adjacent to the packet tip end. In these EXAMPLES, when the more rigid material sidewall was folded along its longitudinal axis to squeeze the pouch,...

example 3

[0063]3HDPE was selected as a cost-acceptable material for a top film pouch. The HDPE was found to adhere to the rigid foldable sidewall material. In expressing tests, the HDPE materials cooperated with the U-expressing shape in forming a desirable cross section bead. Optimum HDPE was determined through a series of experiments on 0.005″ to 0.030″ thick HDPE. A 0.015″ thickness was found to have the best performance of that range of materials in forming bead cross section.

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Abstract

A packet for viscous material includes a pouch that comprises an expressing-shaped first closure end and a second closure end and at least two opposing sidewalls. The closure ends and sidewalls define an enclosure. At least one closure end has an expressing shape and a separate rigid foldable flat cradles the pouch. The flat is of a material that is more rigid than the pouch. A spout-forming area separate from the pouch and the rigid foldable flat, is positioned on a rigid foldable flat side of the packet. The area is of intermediate rigidity or thickness to the pouch and the rigid foldable flat. The spout-forming area is derived as a remnant from a semi-rigid material strip that acts as a pouch-forming tacking strip during a pouch forming process. The spout-forming area reinforces at least a part of the pouch at the pouch expressing shape first closure end. The separate rigid foldable flat overlaps the spout-forming area to cradle the spout-forming area with the cradled pouch. A crease extends longitudinally in the flat and along the pouch to facilitate folding or rolling the more rigid flat to compress the pouch with the spout-forming area to express a content through the expressing-shaped first closure end.

Description

[0001]This application is a continuation-in-part of U.S. application Ser. No. 11 / 613,661, filed Dec. 20, 2006, which is incorporated herein by reference in its entirety and this application is a continuation-in-part of U.S. application Ser. No. 12 / 200,376, filed Aug. 28, 2008 which claims benefit of provisional application 60 / 969,232 filed Aug. 31, 2007, which are incorporated herein by reference in their entirety.BACKGROUND OF THE INVENTION[0002]The invention relates to forming a packet, the packet and kit and method for dispensing a viscous material.[0003]Viscous materials include sealant, mastic, adhesive, glazing, caulk, grout and glue compositions. Viscous materials also include silicone sealants and caulks that are used in building and construction applications. Some of these compositions are referred to as room temperature vulcanizable (RTV) compositions. They may include a moisture-curable polyorganosiloxane polymer, filler and a condensation cure catalyst.[0004]In one proce...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65D35/38B65B43/08B65B3/04B65B51/10B65D35/44B65B3/02
CPCB65D35/38B65D35/44B65B3/02B65B2051/105B65B51/10B65B43/08B65B3/045B65D75/5811B65D83/0094B65B43/06B65B1/02
Inventor FITZGERALD, IV, MATTHEW LOUIS
Owner MOMENTIVE PERFORMANCE MATERIALS INC