8:00 am – 11:00 am:
TH5-Decorating and Assembly-Room S322

8:00 am – 8:30 am:
Digital Printing Technologies for Plastics – Focus on Color Inkjet and Laser Marking

Scott Sabreen, The Sabreen Group
This presentation will examine both digital decorating processes – laser marking and digital inkjet – and look at the advantages and disadvantages of each. The discussion will include suggestions on which process is best for particular plastics decorating applications.

8:30 am – 9:00 am:
Robotic use in Pad Printing

Micah Swett, Diversified Printing Techniques
Factory automation is quickly becoming more common place in today’s manufacturing sector. With labor shortages and rising wages; factories want to automate pad printing to replace workers. Unfortunately, most companies are not doing this because of technical and commercial reasons. Pad printing machines have evolved into complex pieces of equipment many with precision movements with guide rails and servo motors. However, over 95% of pad printing machines are loaded by on operator. An operator will feed the parts into the machine and take them out at the end of the cycle. Pad printing can be more challenging to automate than other processes due to the diversity of products that can be run in one machine and the sensitivity of the inks to the process. Pad printing is behind on the automation of loading parts into a printer. Many companies have developed high level machines with vision systems, rotating fixtures, high speed movements, auto unload, etc… but the system is still loaded by an operator. This operation can many times use more than just the loading operator because there must be someone to bring raw goods to the machine, take finished goods away from the machine, and tend to the inks and other needs of the printing equipment. It takes little imagination to realize that one operator can run a cell like this if the material were automatically loaded and unloaded from the print system. A common answer for this is feeder bowl technology. Many times, feeder bowls are a good solution for this type of situation, however, this is a large investment and it is dedicated to a particular product. Most managers are looking for more diversity in their solutions and want to be able to change things later, this makes a feeder bowl a limited solution. By using robot technology, one can automate the loading of the work cell and have a flexible solution. A robot can be set up with memory and be used to perform many different tasks if the proper job is put into the memory. The capital cost is still there, but the dedicated solution becomes a diverse solution that can utilized for many different projects. • Details to fill in: o Methods of delivery product to a robot Conveyor with camera to tell robot where product is Conveyor with dead stop nest • Both of these systems can be tied to an injection molding machine Tray • Stack up and stack down o Different styles of robots and their specific capabilities 6 axis SCARA Gantry o Technological advancements in pad printing to allow for full automation Automatic ink viscosity Tape clean Camera inspection o Other reasons why full automation is better than an operator Consistency Productivity Speed.

9:00 am – 9:30 am:
Digital Inkjet for Direct to Object Printing

Ben Adner, InkCups
This presentation will discuss digital inkjet technology and how it is being used for a variety of direct to object printing. It will include information on using the right type of inkjet printer (flatbed, conveyorized, or cylinder printer). It will also outline trends in the industry and how this type of technology is projected to grow.

9:30 am – 10:00 am:
Applications for Low Energy Ebeam Curing Technology in Consumer Product Flexible Packaging Applications

Anthony Carignano, eBeam Technologies
Ultraviolet (UV) and low energy electron beam (ebeam) curing technologies are often grouped together. Both technologies are used to initiate the rapid polymerization of the monomers and oligomers contained in photopolymer coatings, inks and adhesives in a process referred to as “radiation curing” or “energy curing.” This presentation will discuss the fundamental differences between UV and ebeam curing technologies and include a discussion regarding the typical differences in formulations and curing equipment configurations commonly used for UV versus ebeam applications. The presentation will then focus on the evolution of low energy ebeam applications and its “miniaturization” over the past decade. Ebeam piezo inkjet printing along with electrophotographic printing and embellishment applications for indirect food contact filmic packaging will be discussed. This presentation will discuss the variety of visual and tactile affects that can be achieved with ebeam finishing for flexible packaging applications using both 100% solid and waterborne photopolymer chemistry. The presentation will then review inline and near line standalone integration options for ebeam which focus on extending the future application potential of ebeam into 2D and 3D functionalized surfaces which incorporate printed electronics.

10:00 am – 10:30 am:
Carbon Black Selection for Successful Through Transmission Laser Welding and Joining

Scott Sabreen, The Sabreen Group
Avraham Benatar, Associate Professor, The Ohio State University
Laser welding to join thermoplastics is used in a wide range of applications because it is a non-contact heating method with short cycle times. and lower cost. For both surface heating and through transmission heating, carbon black is the most frequently used colorant. It was found that carbon black types that have low particle aggregation and distribution were most effective for laser heating. Experiments with laser line beam scanning showed that a slight tilt in the laser head could produce different heating when traveling forward as compared to backward. For dissimilar polymer joining, it was found that surface texturing increased the adhesion joint area and the amount of mechanical interlocking resulting is superior joints.

10:30 am – 11:00 am:
Effects of Surface Treatment on Hard to Bond Plastics

Matthew Miner, Henkel
Difficult to bond plastics, such as polyolefins and fluoropolymers, are commonly used in various industries for some of the following reasons: the cost of the materials and their inherent chemical and thermal resistance. It can be challenging for manufacturers to find solutions to join these difficult to bond materials together. This paper will provide background information on difficult to bond materials, review techniques for quantifying the surface energy of a plastic, review the latest solutions for surface modification and introduce innovative adhesive solutions to meet the challenges of bonding these specific substrates.

8:00 am – 11:30 am:
TH6-Flexible Packaging: Film Manufacturing, Treatment and Performance
(Moderator: David Constant)-Room S320B

8:00 am – 8:30 am:
KEYNOTE: All Encompassing Extrusion Technology for Producing a Wide Spectrum of Simultaneously Bioriented Films

Adolfo Edgar, Kuhne Anlagenbau GmbH
Most flexible packaging companies purchase and convert BOPP, BOPET and BOPA films of various types which are predominantly made using the sequential, tenter frame biorientation process. These same converters may have in-house coextrusion capabilities to produce PE based barrier films with PA and EVOH layers. Recent advances in Triple Bubble technology now make it possible to produce all these film types, simultaneously bioriented, with a single coextrusion line. Simultaneous biorientation delivers enhanced film properties over sequential biorientation, allows the use of high barrier EVOH grades that will not biorient sequentially, and facilitates the customization of films for specialty applications.

8:30 am – 9:00 am:
KEYNOTE: Transportation and Storage Film

Tom Stalun, Sabic
Discuss new advancements in industrial film for use in pallet containment. Compare the benefits of different film wrap techniques such as stretch wrap and stretch hood.

9:00 am – 9:30 am:
KEYNOTE: New Surface Treatment Protocol Discovery for Extrusion Coating

Rory Wolf, ITW Pillar Technologies
Extrusion coating and lamination processes are integral for converting many of today’s high performance flexible packaging structures, most notably pouch structures. Extruding a polyolefin as a coating or using it to laminate primary and secondary substrates, such as paper, aluminum foil, OPET, and/or OPP to form a composite packaging structure is well known in the art. Depending upon the end use, such composite structures will also desirably have good adhesion, flexibility, barrier properties and heat resistance. For example, food storage pouches need sufficient adhesion strength to be handled during filling of the pouch, during preparation and storage and subsequent heat seal resistance during immersion in boiling water and subsequent handling. This study examined how the use of atmospheric plasma surface treatment technology compares to the use of corona as pretreatments in promoting seal strength of extrusion-coated flexible packaging structures specifically involving oriented polypropylene (OPP) and OPET. Results indicated a significant improvement in peel strength with the use of atmospheric plasma under specific application conditions.

9:30 am – 10:00 am:
Changeover Time for a Lab-scale Blown Film Line

Christopher Thurber, The Dow Chemical Company
Accurate understanding of changeover time (i.e., the time it takes to change formulations) in a blown film line can minimize waste and maximize production. Previous work examined changeover time in extruders, and residence time distribution for blown film [Wang et. al., ANTEC Tech. Papers, 2015, Wang et. al., ANTEC Tech. Papers, 2017]. This work uses transmission UV-Vis spectroscopy with a copper phthalocyanine tracer to examine the factors affecting changeover time for a blown film line. Our results show that throughput is the strongest factor influencing changeover time, and material rheology is a weaker but potentially important factor.

10:00 am – 10:30 am:
Biaxially Oriented Polyethylene (BOPE) Films Fabricated via Tenter Frame Process and Applications Thereof

Lin Yijian, Dow
A novel polyethylene product was developed for making biaxially oriented polyethylene (BOPE) films via a commercial scale tenter frame line. As compared to the conventional polyethylene grade with a similar density and a similar melt index, the novel polyethylene could be stretched to 5x in the machine direction and 9x in the transverse direction in a wide temperature window. The BOPE film exhibited higher modulus, higher dart and puncture impact strength, easier tear, and better optical properties than the incumbent blown film used in lamination film applications. A laminated film with a BOPE layer was also evaluated and compared to the incumbent film that had a biaxially oriented polyamide layer. The BOPE laminated film showed equivalent performance at a lower film cost.

10:30 am – 11:00 am:
Biaxially Oriented Barrier Film (BOPP) with Nanostructured Additives

Krishnamurthy Jayaraman, Michigan State University
Much of transparent, flexible high-barrier packaging film is based on biaxially oriented polypropylene (BOPP). The biaxial orientation process improves the barrier to both oxygen and water vapor; yet this must be combined with other layers or an organic coating to satisfy the product requirements. This paper reports on further improvements of 40% in barrier to both oxygen and water vapor in BOPP-NC over BOPP after incorporating a masterbatch additive based on nanoclay into the polypropylene. The biaxial orientation was carried out on extruded sheets of 300 micron thickness with a Karo IV apparatus. The maximum area stretch ratio achieved during biaxial stretching of the resulting compound was equal to that obtained with the base polypropylene. TEM showed that the dispersion of nanoclay was maintained after the biaxial stretching while XRD studies revealed that the crystalline lamellar width in the BOPP-NC was larger than in BOPP.

11:00 am – 11:30 am:
Method to Measure Oxygen Permeance in Sealed Flexible Packaging

Alejandro Serna, ICIPC
A method to measure oxygen permeance in a sealed flexible packaging, based on ASTM F2714 – 08 (standard test for oxygen headspace analysis of packages using fluorescent decay) is proposed. This method allows to consider the effect on the barrier properties of the sealing integrity, the packaging geometry and the defects due to handle or quality issues (pinholes, wrinkles, among others). This kind of measurements are relevant for the adequate design of packaging, a better estimation of the shelf life and the evaluation of quality problems. Traditionally, the oxygen permeance and oxygen transmission rate (OTR) in packaging films are measured using the standard coulometric method (ASTM D3985). In this method, the samples are taken from the roll or cut from a complete package. In this case, oxygen permeance is measured under ideal conditions, without considering the real packaging application scenario. Oxygen permeance measurements on four different barrier-level packages were carried out with the proposed method and with the standard coulometric method. Results are compared and the advantages and disadvantages of the proposed method are described.